The invention discloses a rostrum for teachers in junior high schools. The rostrum includes a rostrum body, a retractable plate is arranged in an inner cavity of the rostrum body, the right side of the retractable plate penetrates through the rostrum body and extends to the outer side of the rostrum body, a supporting leg is fixedly connected to the right side of the bottom of the retractable plate, a first bracket is fixedly connected to the bottom of the supporting leg, and a first roller is movably connected to the bottom of the first bracket. Through arrangement and cooperation of the rostrum body, the retractable plate, the supporting leg, the first bracket, the first roller, a second bracket, a second roller, a sliding groove, a threaded sleeve, a threaded rod, a first rotating rod,a first gear, a second gear, a second rotating rod, a connecting rod, a handle, a first connecting block, a second connecting block, a movable plate, a fixing block and a fixing rod for use, the problem that the use areas of existing rostrums in classrooms cannot be increased is solved, and the rostrum for teachers has the advantages of an increasable use area and is worthy of popularization.